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Questions and Answers
What is the purpose of relational operators in C++?
What is the purpose of relational operators in C++?
- To declare variables
- To compare numbers and determine their relative order (correct)
- To perform arithmetic calculations
- To output text to the console
Which relational operator would be used to check if one number is greater than another in C++?
Which relational operator would be used to check if one number is greater than another in C++?
- =
- > (correct)
- <=
- >=
In C++, what will the expression '7 >= 5' evaluate to?
In C++, what will the expression '7 >= 5' evaluate to?
- True (correct)
- Error
- False
- Undefined
If a student's score is 90, which grade will they receive based on the code snippet provided?
If a student's score is 90, which grade will they receive based on the code snippet provided?
What is the main use of relational operators in programming?
What is the main use of relational operators in programming?
What is the result of evaluating the expression $5 < 6 && 9 > 3$?
What is the result of evaluating the expression $5 < 6 && 9 > 3$?
In C++, which relational operator is used to determine if two numbers are not equal?
In C++, which relational operator is used to determine if two numbers are not equal?
What does the C++ expression $8 > 10 || 6 < 3$ evaluate to?
What does the C++ expression $8 > 10 || 6 < 3$ evaluate to?
If a C++ program has the statement int x = 5;, what will the expression x >= 5 result in?
If a C++ program has the statement int x = 5;, what will the expression x >= 5 result in?
Which of the following C++ expressions evaluates to false: $7 == 8$?
Which of the following C++ expressions evaluates to false: $7 == 8$?
What is the result of the expression '7 < 5' in C++?
What is the result of the expression '7 < 5' in C++?
If a C++ program has the statement 'int x = 5;', what will the expression 'x < 5' evaluate to?
If a C++ program has the statement 'int x = 5;', what will the expression 'x < 5' evaluate to?
Which of the following is a valid relational operator in C++?
Which of the following is a valid relational operator in C++?
In C++, what does the expression '10 <= 10' evaluate to?
In C++, what does the expression '10 <= 10' evaluate to?
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Study Notes
Relational Operators in C++
- Purpose: Relational operators in C++ compare values and return a boolean result (true or false).
- Greater than (>) operator: Used to check if one number is greater than another.
- Expression '7 >= 5': Evaluates to true because 7 is greater than or equal to 5.
- Grade Determination: Without seeing the code snippet, it's impossible to determine the grade for a score of 90.
- Main use: Relational operators are crucial for decision-making in programming, allowing programs to execute different code blocks based on comparisons.
- Expression '5 < 6 && 9 > 3': Evaluates to true because both conditions (5 is less than 6 and 9 is greater than 3) are true.
- Not Equal (!=) operator: Used to determine if two numbers are not equal.
- Expression '8 > 10 || 6 < 3': Evaluates to false because both conditions are false (8 is not greater than 10, and 6 is not less than 3).
- Expression 'x >= 5': Evaluates to true because the value of x is 5, which is equal to 5.
- Expression '7 == 8': Evaluates to false, because 7 is not equal to 8.
- Expression '7 < 5': Evaluates to false because 7 is not less than 5.
- Expression 'x < 5': Evaluates to false because x is equal to 5, which is not less than 5.
- Valid Relational Operators in C++: >=, <=, ==, !=, >, <
- Expression '10 <= 10': Evaluates to true because 10 is less than or equal to 10.
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